This tall, shapely 3 metre (10ft) high stone stands in a low hedge on uncleared, steeply sloping ground, with panoramic views across Chyandour valley towards St Michael’s Mount, the top of which is just visible. There are no relevant field names in the vicinity. It seems that Carfury menhir remained unrecorded until the early part of the 20th century, when Charles Henderson described it as a “magnificent stone... a remarkably well-chosen monolith on account of its slenderness and length.” The site was excavated by Peter Pool and Vivien Russell between 31 December 1957 and 3 January 1958. The menhir, known locally as the Cuckoo Rock, was considered by the two excavators to be one of the most elegant in West Penwith and had probably been shaped by flaking, although no tool marks were visible. The ground was cleared down to the rab about 1.24 metres (4ft) around the base of the stone. It was found that the standing stone had been erected in an oval pit measuring 1.24 by 1.08 metres (4ft by 3ft 6in) cut into the rab. The shape of this pit suggested that the stone had been slid downhill until its base was over the pit, then tipped upright and wedged in place with five small stones. During the excavation, steel guy ropes had to be placed around the stone to support it. Unfortunately, the work did not produce any finds whatsoever, and in view of this negative result it was decided not to publish the draft report. Russell also noted how she had found a 3.95 metre (12ft 9in) long stone lying downhill by the same hedge. It lay next to the block of stone from which it had been detached, yet showed no signs of drill marks or other rock-splitting methods and, if trimmed slightly, “would make a monument very similar to the Cuckoo Rock.” The stone was designated a Scheduled Monument in June 1968. It is within sight of Ding Dong Mine. Little else was found, but Russell’s observation of the potential sister stone adds another layer of mystery to this striking site.